Meter pump



Nov.`6, 1923. y 1,472,996

- c. E. STAHL METER PUMP l:s sheets-sheet 1 Filed March 17, 1919 m .www @Mm Nov. 6, 1923 l,472,99

c. E. STAHL METER PUMP Filed March 1'7, 1919 5 Sheets-Sheet 2 Patented Nov. 5, 1923.

CHARLES E. STAHL. OF TIAI'IBTIFHROE HARBOR, ILLINOIS, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO F. C. AUSTIN MACHINERY COMPANY, A CORPORATION OLE ILLINOIS.

METER PUMP.

Application filed March 17, 1919. Serial No. 283,174.

To @ZZ fr/0m t may conce/ra.'

Be it known that I, CHARLES E.' STAHL, a citizen of the United States of America, and a resident of Tint-hr() p Harbor, Illinois, have invented a ceitain new and useful'Improvenient in Meter Pumps, of which the following is a specification.

This invention relates to pumps for sup-V plying water or other liquids in pi'edetermined quantities, and more particularly to those for use in connection with mixing machines.

Generally stated, therefore, the object of the invention is to provide a novel and highly efficient. pump of the foregoing general character, which ycan be controlled at will to discharge predetermined quantities of water or other liquids, so that exact-ly the right amount of liquid will be supplied each time a discharge takes place.

A special object is to provide a novel and improved pump of such a character, and so arranged in Combination with certain elements, that the pump itself may continue iii operation without stopping, not only while discharging'. but also while no discharge is taking place.v

Another object of the invent-ion is to provide certain details and features of construction and combinations tending' to increase the general eiiiciency and the desirability of a. metering or measuring pump of this particular construction.

To these and other useful ends the invenlion consists in matters hereinafter set' fort-h and claimed.

In the accompanying drawings-- F 1 is a front eleva-tion of a metering pump apparatus embodying the principles ofthe invention.

Fig. 2 is an enlarged vertical section of the pump, and of the valve-which controls the discharge therefrom.

F ig. 3 is a rear elevation of said pumping apparatus.

Fig. et is a side elevation of said pump.

Fig. 5 is an enlarged section on line 5 5 in F ig. l. 4

,Figa 6 is a vertical section on lineG-G in F ig. 5.

Fig..7 is a. plan of the ratchet and tripping mechanism shown in Figs. 5 and 6.

Y Fig. 8 is detail view of the various levers comprising the pawl actuating mechanisin'looling from the interior of the casing Von the side opposite to that illustrated in s thus illustrated, the invention com-V prises a rotary gear pump having a casing l and rotors 2 of the usual or any suitable character, which are operated by a sprocket wheel 3 on the shaft of one of said rotors, so that the latter turn in opposite directions, as indicated by the arrows in Fig. 2. Iii this way, the water is sucked upy through theV S into communication with the passage 5,V

and at. such time the discharge from the pump is then carried through Ithe valveinto` the by-pass 9 which leads back to thel source of supply. Thus the quantity of water discharged .through the passage 7 leading to the mixer will depend entirely upon the length of time which the valve is allowed to remain in .the position in which it is shown in Fig.V 2, and timing mechanism is provided for this purpose.

Said mechanism comprises a casing v10 provided with a curved portion 1l having a series of openings 12 therein for a gauge pin Y 13, which latter can be pulled out and then inserted in any one of said openings. A shaft 14 is mounted at the bottom of the casing 10, being' parallel with the axes of the two rotors of the pump. This shaft is operated by a sprocket chain connection 15 which extends to the shaft upon which the sprocket 3 is mounted. lIn this way, this shaft 14; is

continuously rotated by the. continuous or uninterrupted operation of the pump. A pinion 16 on the shaft 14 engages a gear wheel 17 on the shaft 18, and a pinion 19 on said shaft 18 engages a gear wheel 2O on the idler shafty 21, which latter has a pinion 22 that engages the gea-r wheel 23 on the main shaft 24, which latter is disposed transversely in the upper portion of the Casing of the mechanism. Said gear` wheel 23 is loose on the shaft 24, and the latter has a cam 25 which engages the roller 26 on the lever 27, they latter having itsjlower end pivoted at 28 on the casing; The upper end of this lever 27 is connected by a rod 29 iio with the crank arm 30 of the previously mentioned valve G, whereby the lat-ter will be opened and closed by the action of said cam and lever. .tiny suitable means, suoli as a spring 31, may be employed for yieldingly holding the roller 26 in engagement with the periphery of said cam, whereby rotation ot the latter, or oscillation there-ot, as will hereinafter more fully appear, will cause the desired reciprocation or" the rod 29, resulting in the automatic control desired for the valve. Said shaft 24 has an arm 32 fixed thereon, and said arm is connected by a link 33 with the ratchet dog 34, which lat ter has its engaging portion adapted to engage the teeth ol the gear wheel 23, thereby to rotate the arm. This dog 34 has aroller 36 at its rear end which travels in the cam groove 537 which is formed in a stationary wall 3S supported by the casing. loose sleeve 39 is mounted on the shaft 24, to extend through the bearing 40 which supports the sliait at one side oi' the casing, and is provided with a short crank 41 which is connected by a link 42 with the pivot 43 which connects the link 33 with the dog 34, so that upward movement ot' this link 42, by a partial rotation et the sleeve 39, will raise the engaging portion 35 of the dog out of engagement with the gear wheel 23, so that said dog can be adjusted to any predetermined position on the gear wheel, and so that the shaztt 24 can be rotated by the hand lever 44 to turn the cam 25 to suoli a posi tion that the valve will be opened. For the operation of the crank 41 and its link 42, to release the ratchet dog from the gear wheel, a second hand lever 45 is rigidly secured to the outer end ot the sleeve 39, and a spi'ing 46 is interposed between these two hand levers, so that the latter are maintained such a distance apart that the ratchet dog i5 normally held in engagement 'with the gear wheel.

,Referring to Fig. 1, and assuming that the hand levers 44 and. 45 are at the extreme left, or some distance to the lel't o'l the position iii which they are shown, and assuming that the gauge pin 13 has been inserted in the position shown, the operation is as follows:

The operator will grasp the two hand levers and squeeze them together, thus partially rotating the sleeve 39 and disengaging the dog 34 from the gear wheel. 23, and will then swing both levers to the right until the lever 44 engages said pin 13, and will then release the grasp on the two levers and allow the dog again to engage the gear wheel. While the two levers were in normal position, at the extreme left, the roller 2G was in engagement with the low portion 47 of the cam 25, but whenthe two hand levers are swung to the right, in the manner stated, this roller 26 will be brought into engagement with the high portion or greater diameter 48 of said cani, as shown iii Fig. 3, thus pulling the rod 29 in a direction to open the valve 6, and thus allowing the water to discharge from the passage 7 to the mixer. While the two hand levers were in their normal position, at the extreme lett in Fig. 1, the roller 36 occupied the notch 49 at one end of the cam groove 37, thereby holding the engaging portion 35 ot the dog out of engagementwitli the gear wheel 23, and thereby permitting the gearing to rotate continuously without rotating the cam 25, in ay manner that will be readily understood. However, when the lever 44 engages the pin 13, and the dog rei-engages the gear wheel, the latter then rotates the shaft 24, through power communicated from the dog through the link 33 and the crank 32 to said shaft, lthus turning the cam 25 backward toward its normal position, and as: soon as the roller 36 again reaches the notch or opening 49 at the end of the cam groove, the dog 34 will be disengaged from the gear wheel 23, thereby stopping the rotation of said cani 25, so that 'the gearing will then run continuously, being driven from the pump. rl`his will also, it will be seen, close the valve 6, and then the amount ot' water discharged through the passage 7 is dependent upon the distance that the two hand levers travel from the gauge pin 13 in order to reach their normal position. The shorter this distance, the less will be the quantity of water discharged, and the longer this distance, as when the pin 13 is in a hole 12 at the extreme right in Fig. 1, the greater will be the discharge'of water into the mixer. VlVliile the valve 6 is closed, as previously stated, the water from the pump is being discharged through the passage 9 and back to the source of supply, and in this way the pump is kept primed.

Sometimes the water is drawn from a deep source, or from ay source which has no pressure; and under suoli conditions the stopping oi the pump would leave it dry, so tospeak` and the opening ot' the valve would not be accompanied by an instant discharge of 'water into the passage 7, so that the discharging or' the water in predetermined quantities would not be possible. Vlith the construction shown and described, however, the pump is being flushed with water while not discharging intothe mixer, and thus remains primed and ready to discharge instantly into the passage 7 as soon as the valve is opened.

Vith the foregoing construction, itwill be seen that one adjustment of the pin 13, which constitutes the means for varying the quantity to be discharged, is sufficient for successive operations without readjustnient thereof, so that n0 further adjustment is necessary until it is desired to change the quan tity. As the machine is operated positively il (l as a pump, it follows that it will supply the water quicker and with more certainty, so

. that the required quantity is practically always on hand and available when wanted.

What. I claim as my invention is 1. ln a pumping apparatus theV combination of a continuously operating pump, means for driving said pump, a valve to control the discharge from said pump, while the pump is operating, and mechanism operable manually to open the valve and automatically closel said valve.

. 2. A structure as specified in claim 1, said pump being connected to operate said mechanism.

3. A structure as specified in claim 1, said mechanism being adjustable to vary the closing of the valve.

et. A structure as specified in claim 1, said mechanism comprising manually operable means to open said valve, and means to determine the extent of operation of the mechanism necessary to automatically close the valve.

5. A structure as specified in claim 1, said mechanism comprising` a continuously operating wheel having teeth, a shaft on which said wheel is loosely mounted, a cam on said shaft, means operated by said cam to control said valve, a connection having a ratchet dog operated by said wheel to turn said shaft. in one direction, a hand lever to turn said shaft in the other direction, means to variably limit the manual operation of said lever to open the valve, a second hand lever and devices operated thereby to disengage said dog from said wheel to permit manual operation of said first lever, a spring between said levers, and means to automatically release the dog from the wheel after the valve is closed.

6. The combination of a pump, driving means therefor. means to control the discharge from said pump, and mechanism to automatically control sa-id discharge controlling means` said mechanism comprising a shaft, al cam on said shaft to control said means, a hand lever to turn said shaft to start the discharge, a continuously operating toothed wheel loosely mounted on said shaft, a connection having a ratchet dog to engage said wheel to turn the shaft in one direction, a hand lever to turn said shaft in the other direction, means to variably limit the manual operation of said lever to start the discharge from the pump, a second hand lever and d-evices operated thereby to disengage said dog from the wheel to permit manual operation of the first lever, a spring between said levers, and means to automatically release the dog from the wheel after the discharge is discontinued.

T. A structure as specified in claim 1, and a by-pass to continue the fiow through said pump when said valve is closed.

S. A structure' asspecilied in` claim 6, and a passage to continue the flow through said pump after they said dischargel is discontinued. Y

9. A structure as specified in claim 1, in combination `with means whereby said mechanism is adjustable. to vary'the` actionthereof and whereby suchadjustmentis sufficient for successive discharges and obviates the necessity of further adjustment until a different discharge is desired.

10. A structure as specified in claim 1, said pump being of the rotary type to operate at sufficiently high speed to deliver the water quickly and under pressure to the point where the water is needed. Y

11. Apparatus for supplying fluid un-v der pressure, comprising a controlling valve, a pivoted handle, mechanism whereby manual operation of s aid handle in one direction opens said valve, and power operated instrumentalities for returning the handle in the other direction to automatically close. the valve, -said mechanism comprising an oscillatory cam, means for engaging said cam to open the valve, and a spring to close the valve when the cam is returned to normal position.

12. Apparatus for supplying fluid under pressure, comprising a controlling valve, a pivoted handle, mechanism whereby manual operation of said handle in one direction opens said valve, and power operated instrumentalitiesvfor returning the handle in the other direction to automatically close the valve, said instrumentalities including a constantly driven pump connected to slowly return said handle to normal position.

13. Apparatus for supplying fluid under pressure, comprising a controlling valve, a pivoted handle, mechanism whereby manual operation of saidhandle in one direction opens said valve, and power operated instrumentalities for returning the handle in the other direction to automatically closethe valve, in combination with al series of holes extending along near the path of said handle, and a. stop adjustable from one hole to another of said series to variably limit the opening movement of said handle.

14. Apparatus for supplying fluid under pressure, comp-rising a controlling valve,

a pivoted handle, mechanism whereby man-V ual operation of said handle 1n one direction opens said valve, and poweroperated instrumentalities for returning the handle in the other direction to automatically close the valve, said instrumentalities including a constantly driven step-down gearing to slowly return the handle to normal position.

15. Apparatus for supplying fluid un der pressure, comprising a controlling valve, a pivoted handle, mechanism whereby manual operation of said handle in one direction opens said valve, and power operated instrumentalities for returning the handle in the other direction to automatically close the Valve, said instrumentalities being constantly driven in one direction, said handle having a ratchet connection with said instrunientalities, and means adjacent to said han dle to control the ratchet, so that Said handle can be swung over from normal p0sition While said instrumentalities are in operation.

16. A structure as specified in claim 11,

f said instrumentalities heingconstantly driv- Aen 1n one direction, Said handle having a ratchet connection With Said instrumentalities, and means adjacent to said handle to control the ratchet, so that said handle can be swung over from normal position While said instrumentalities are in operation.

CHARLES E. STAHL, 

